Avoid inclusion of _tag in tool call parameters (#4545)

Effect-TS · Mar 3, 2025 · a95108a · a95108a
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diff --git a/.changeset/wicked-starfishes-bow.md b/.changeset/wicked-starfishes-bow.md
@@ -0,0 +1,5 @@
+---
+"@effect/ai": patch
+---
+
+Avoid inclusion of `_tag` in tool call JSONSchema
diff --git a/packages/ai/ai/src/Completions.ts b/packages/ai/ai/src/Completions.ts
@@ -315,7 +315,7 @@ const convertTool = <A, I, R>(
 ) => ({
   name,
   description: getDescription(schema.ast),
-  parameters: makeJsonSchema(schema.ast),
+  parameters: makeJsonSchema(AST.omit(schema.ast, ["_tag"])),
   structured
 })